Toggle search
Submit Search
Shopping Cart
The new HK suppressed MR556A1-SD is equipped with a cutting edge next generation of suppressor technology from Operators Suppressor Systems Inc. (OSS). It is coupled with HK’s unique new Modular Rail System (MRS) to provide the shooter with a high performance integrated weapon system.
The modular rail system (MRS) for the MR556-SD allows the shooter to place individual rail components and accessories anywhere along the length of the seven free sides of the forearm using the slotted interface. HK has been working with OSS to develop the next generation of advanced suppressors for the HK MR series of rifles and carbines.
These suppressors are comprised of two modules, a Back Pressure Regulator (BPR) and a Signature Reduction Module (SRM)™. The BPR1425™ on the MR556A1-SD captures and controls expanding gases instead of simply trapping the gas with baffles. To further reduce the sound signature of the MR556 and eliminate flash, the OSS SRM4 module can be added to the end of the BPR1425.
Important Features of the MR556A1-SD
The HK MR556A1-SD gives the shooter the same outstanding MR rifle performance with the added benefit of more ergonomic handling and noise comfort of the new MRS rail system and OSS advanced sound suppression.
Back to top